Closure for glass jars



UNITED STATES PATENT OFFICE.

JOHN JUDKINS, 0F LONDON, ONTARO, CANADA.

CLOSUBE .FOR GLASS JARS.

rseaeen Application led June 8,

To all whom t may concern:

Be it known that l, JOHN JUDKINS, oi' the city of London, county ofMiddlesex, Province of Ontario, Canada, have invented certain new anduseful Improvements in Closures for Glass Jars7 ot which the followingis a specification.

This invention relates to closures particularly adapted ior wide mouthedglass jars such as are used ttor preserving perishable goods and myobject is to devise a closure which is easily applied and which willenable a light seal to be easily eifected.

l attain my object by means of the. constructions hereinafter describedand illustrated in the accompanying drawings 1n which- Figure l is avertical section of a part of a fruit jar provided with my improvedclosure;

Fig. 2 a side elevation ot the same;

Fig. 3 a plan View of the same; and

Fig. l a side elevation of the U-section metal ring with its endsdisconnected.

In the drawings like numerals of reference indicate corresponding partsin the dltferent iigures.

l is a jar. Around the mouth of the Jar is iormed the usual seat 2 for apacking ring 3. An annular external collar 4 is 'formed around the arbelow said seat. 5 is the cover, which is preferably, though notnecessarily, made with a flat top externally. 0n the collar 4: isdetachably secured a U- section metal ring 6. While any suitable meansmay be employed to secure this in position, l prefer to employ thearrangement shown particularly in Figs. 2 and e. The ring istransversely divided, and through one end is formed a slot 7. The otherend is provided with a tongue 8, which is passed through the slot 7 andthen bent Hat as shown in F ig. 2. To this ring are welded the lowerpart-s of the stems 9, the

Specification of Letters Patent Ved stems welded to Patented Jan. 25,1921.

1920. Serial no. 387,435.

upper ends of which are threaded. These stems extend through suitableopenings in the metal pressure plate l0 and on their upper ends areadapted to be screwed the wing nuts ll. it is evident that by screwingdown these nuts that the pressure plate will be caused to bear upon thecover with sufficient pressure to hold its edges in air-tight engagementwith the packing ring 3.

When it is desired to remove the cover, the nuts are removed, thepressure plate lifted off and the cover pried oft'. The closing deviceis readily completely disconnected at any time by bending back thetongue 8 and removing the icl-section ring.

lt will be seen that from the above description my closure willsatisfactorily attain the objects ot my invention as set out in thepreamble of this specification.

W hat l claim as my invention is l. A jar having a seat for a packingring termed around its mouth and an annular external collar below saidseat, in combination with a U-section metal ring detachably secured inposition over said collar; threadsaid collar; a cover for the jar; apressure plate adapted to engage the cover and having holes thereinthrough which the threaded stems pass; and wing nuts threaded onpressure plate against the cover.

2. A jar closure constructed as set forth in claim l in which theU-section ring is transversely divided, one end having a slot thereinand the other being provided with a tongue passing through the slot andbent over to secure the ring in place.

Signed at London, Ontario7 Canada, this 28th day of May7 1920.

JOHN JUDKINS.

Witnesses J. P, Moons, W. MCELHERAN.

said stems to clamp the

